Great review, well described, concise and of interest. Science fiction as a rule, barring a few exceptions, leaves this viewer slightly cool and overwhelmed (the most frightening movie I ever saw was "The Blob", starring Steve McQueen when I was 6, and I lasted for about twenty minutes before I began to yell). Today, I believe the above is a cult classic. More to the point, if my father had read what you had to say on "Gravity", he most likely would have been among the first-in-line to see this new movie. He was to write a book arguing the case for the extraterrestrial origin of man, and I am sure he must have enjoyed Kubrick's brilliant Space Odyssey, to list a few among others in this genre.
Be as it may, there is a large and increasing audience who is fascinated with reason about Outer Space, and the visual effects of some of these movies are quite extraordinary and breath-taking. Back in the 70s, "Close Encounters", was both stunning and moving, and a favorite of my late husband. "Gravity" from what you relayed falls into this category when it comes to magnificent cinematography, giving the viewers a chance to look at what one might term philosophically at 'Life without', and the Universe at its most mysterious.
It does sound like an extraordinary emotional roller-coaster ride as described by another reviewer, which might leave some of us on wobbly feet after the viewing. Having said this, last evening a favorite movie companion suggested at dinner that this new movie in 3D, by the brilliant director Alfonso Cuarón would be at the top of the list of possibilities for an outing, and it helped to read now what you have to say on the above.
Sending this excellent review of yours to a few others, while planning to watch this in time, not only for the special visual effects, but based on what sounds like an outstanding story of human survival. Many thanks.